Ventilator



H. ZWERLING Jan. 1 1935.

VENT ILATOR Filed March 18, 1935 ATTORNEY Patented Jan. 1 1935 vEN'rmATron i' l Harry Zwerling,..NevcYork;.N..Y..

Application March is, 1933,. Serial nd etinzs. l .4 Claims. (01. 9872) 2 The present inventionrelates to ventilators for buildings and, in particular, to those of the type designed to be suspended in, or at the top of aventilating pipe, flue, chimney or the like.

It is common to mount air or electrically driven motor fans on top of ventilating pipes. The structures. now in common use, however, have several. disadvantages; to wit, (1) when the ventilating motor stops or is stopped, the wind may blow downward into theventilating pipe, (2.) rotation. of the motor ian andwind produces. considerable noise due; to the. transmission of vibra tions. to. the ventilator pipe upon which the motor and fan is supported, (3) the motor is generally mounted without, any special protection in the path of the gases flowing. through the ventilating pipe and often is subjectv to damage by corrosive, hot. or moist gases present, and (4); no means. are provided, generally, for diverting rain from, the ventilating pipe, v

One of the-objects of the present invention-is to provide a special assembly of. ventilating pipe. and motor-driven, (air or electrically) fanprovided with means operative. to prevent down drafts. into; the ventilating pipe. when the motor and fan: are at rest.

Another object is. to provide a ventilating assembly of the type and of the character described wherein means. are=provided for diverting rain from entering the through the ventilat- 1 ing pipe.

Another object. is to'provide a sound and shockproofi cushioned supportfor a motor-driven. tan, said support serving to damp-or eliminate vibrations which might otherwise be transmitted from the motor and. fan tothe. building through the ventilator pipe and the. associated structures A further object is to provide-an improved shaped casing enclosing a motor'and positioned to protect the latter both from deleterious gases passing through the ventilating pipe and from rain which may fall on the casing, yet permitting ventilation and cooling of the motor.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter described and of which the scope pf application will be indicated in the following claims.

In the accompanying drawing, in which is shown several of the various possible illustrative embodiments of this invention,

Figure 1 is a vertical cross-section through one embodiment of the invention;

Figure 2 is a top plan view, partly in section, of the assembly shown in Figure 1, the section being taken on line 2-2 of the latter figure;

Figure 3 is a fragmentary bottom plan view showing a portionoi the, cradle supporting themotor corresponding to a cut taken in line 3-3 of Figure1;.and I Figure dis, a fragmentary?cross-section view' showing a modified. f ormof cushioned mountingv for, the motor similar tothat shown in Figure 1.,

.Reierring to Figures 1. to 3, of-the drawing, there is shown a ventilating assembly for a; building oonstructedto employ the. invention. Said. assemblylo is. seen. to comp-risethe fol-. lowing elements: a ventilating-pipe, flue, chime ney or: the like: 11,,-a plurality or spaced brackets 12 mounted on the upper or outlet end of venti lating tr pe-11,. eaclr bracket,12;.beingJprovided with; inwardly extended, arms, 12* and outwardly extending arms 12B-,,a wind breaking shell 13 supported on; brackets; .12 spaced relation and extending tin beyond the ventilating pipe 11 the lower rinroisaid shell 13, extendi-ng downward a considerabledistanceibel'ow, thetop of the ventilating pipell, said shell 13 being composed of a lower conical or: otherwisetaperingportion 13s,, a, medial cylind-rica1; portion 113?, and an upper conical or otherwise tapering portion 13, which upper edge. 13 oi shell 13 extends-beyond the upper end of the ventilating pipe 11.. A

motor 1A= is, provided. having a. coupling 15 for aventi-latorshaft, 16 supported on ball-bearings 17 a; fan 18 secured to turnwith said shaft, ball-bearings- 17 being mounted in the lower end of a. housing 19 suspended from, or forming' a part of, the main motor casing. ,A plu"rality of spaced'suspension brackets 19.? "forms part of a, cradle 20- for the motor 12, and includes a cushioning assembly which. may comprise; superposed layers of cork 2.1,;wood 22, andflielt 23 bolted together by independent bolts 241and. 2 5,

bolts 24, retaining saidcork and woodlayers and bolts, 25 said. wood and. felt, layers- V A casing. as-

sembly designed to protect the motor 14 from deleterious gases issuing from the ventilator pipe 11 as well as from rain is provided and is seen to comprise a lower conical shell 26 supported on arms 12 of bracket 12, and upper conical shell 27 secured to the shell 26 and forming a peripheralgutter 28 therewith. A bell portion 29 is fitted over the motor. proper and has an upper top opening 29 protected by cap 30. A drain pipe 31 extends downward from gutter 28 to the inner edge of portion 13 of shell 13.

Appropriate electric cables 32 extend up along ventilating pipe 11 and furnish power to motor 14.

A rubber, cloth or similar flexible gasket of conical shape 33 is inserted between the housing 19 and shell 26, said gasket 33 being held in position in any suitable manner as by flange or ring 34 and bolts 35.

The hereinabove described assembly operates in the following manner: When the motor 14 is 11. The gases impinging on shell,26/will be de-,

flected outward against the inner surface of shell 13 and then upward by portion 13 of this latter shell.

It will be noted that the'motor 14 is indirectly supported on brackets 12 through the intermediary of shells 26, 27- and cradle 20 but any vibrations cannot readily be transmitted from the motor 14' to pass theforadle 20' because of the cushioning action exerted by elements 121 and23.

The wood layer 12 serves merely asa non me tallic abutment against whichbolts 24 and 25 may be taken up; The-transmissionof vibrations by the motor 14 to the ventilating pipe 11 andthe structures supported thereon is further pre-' vented by the-flexible gasket 33 interposedbetween elements-19 and26in a manner shown in Figure 1. V I ,1 .i' 4'. F I

Cushioning assemblyielements 21, 22, 23 may be replaced bythe form of cushioning'structure represented 'in Figure 4wherin a rubber cushion 126 is mounted between 'a pair of U-shapedretaining channel rnembers 127 retainjed in assembled relationto cradle 120 and casing suspension brackets 'IQ -by-"boltsand screwsl25 andare vul- 128. Preferably 'the; rubber cushions canized to the-channel members12'l From the foregoing, it will be seen that 'an assembly is provided wherein (1) down drafts into" the ventilating pipe are eliminated when the ventilating fan is at'rest, 2) rain is preventedfrom entering"the"ventilating' pipe; '(3) the motor is a protected from deleterious or moist gases issuing from the ventilating pipe, 'and (4) vibrations originating in the'mo ving parts are prevented from reaching the ventilating pipe and its associated; structures;

It willthus be seen that there is provided a de-' a vice in whichthe several'objects of this invention are achieved and which is well adaptedto meet 1 housing supporting said bearing, and a flexible the conditions of practical use; H b

As various possible embodiments might be made of the above invention, and as various changes might be madein-the embodiment above set forth,

When the motor 14 :is'

relation to said ventilating pipe, said shell including a pair of surfaces tapering in opposite directions, a casing supported on said bracket spaced from said shelland pipe, a cradle suspended from said casing a motor adapted to be suspended in said cradle, and cushioning means interposed between said motor and said cradle.

2. A structure as defined in 'claimfl wherein said casing is provided with an opening'adapted to permit the passage of a motor shaft, and a flexible element attached to said casing and extending inwardly therefrom towards said shaft. 1

3. In combination with a ventilating pipe and a motor supported thereon, a casing enclosing said'motor, said casing having a lower tapered portion positioned to deflect gases issuing from said ventilating pipe away from said motor and an upper portion tapered downward including a gutter, and a drain pipe extending from saidgutter and discharging at a point outside said ventilating pipe.

4. In combination with a ventilating pipe, spaced brackets mounted adjacent an upper extremity of said pipe, each of said brackets including outwardly and inwardly extending arms,

a shell supported on the outwardly extendingl arms of said brackets, said shell being positioned in'external relation tosaid ventilating pipe and including a pair of oppositely tapering surfaces, a casing assembly supported on the inner arms of said brackets, said casing assembly including a lower portion tapering downwardly and inwardly and an upper portion tapering downwardly and outwardly, said upper portion terminating peripherally in a gutter, a drain pipe extending from said gutter to a point outside said ventilating pipe, a cradle suspended from said casing, a motor carried on said cradle, resilient means interposed between said cradle and said motor for absorbing vibrations'transmitted from said motor, a shaft coupled to said motor, a bearing depending from said motor through which said shaft extends, a

element interposed between said'housing and said casing lower portion.

HARRY ZWERLING. 

